72473435515 has 16 divisors (see below), whose sum is σ = 93905128800. Its totient is φ = 53377615872.

The previous prime is 72473435477. The next prime is 72473435549. The reversal of 72473435515 is 51553437427.

It is a cyclic number.

It is not a de Polignac number, because 72473435515 - 2²⁷ = 72339217787 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1446310 + ... + 1495579.

It is an arithmetic number, because the mean of its divisors is an integer number (5869070550).

Almost surely, 2^72473435515 is an apocalyptic number.

72473435515 is a deficient number, since it is larger than the sum of its proper divisors (21431693285).

72473435515 is a wasteful number, since it uses less digits than its factorization.

72473435515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942286.

The product of its digits is 1764000, while the sum is 46.

The spelling of 72473435515 in words is "seventy-two billion, four hundred seventy-three million, four hundred thirty-five thousand, five hundred fifteen".